c:\Sites\tasks>rails c
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-4.0.0/lib/active_record/connection_adapters/connection_specification.rb:58:in `rescue in resolve_hash_connection': Specified 'sqlite3' for database adapter, but the gem is not loaded. Add `gem 'sqlite3'` to your Gemfile. (Gem::LoadError)
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-4.0.0/lib/active_record/connection_adapters/connection_specification.rb:55:in `resolve_hash_connection'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-4.0.0/lib/active_record/connection_adapters/connection_specification.rb:46:in `resolve_string_connection'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-4.0.0/lib/active_record/connection_adapters/connection_specification.rb:30:in `spec'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-4.0.0/lib/active_record/connection_handling.rb:39:in `establish_connection'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-4.0.0/lib/active_record/railtie.rb:175:in `block (2 levels) in <class:Railtie>'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/lazy_load_hooks.rb:45:in `block in run_load_hooks'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/lazy_load_hooks.rb:44:in `each'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/lazy_load_hooks.rb:44:in `run_load_hooks'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-4.0.0/lib/active_record/base.rb:322:in `<module:ActiveRecord>'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-4.0.0/lib/active_record/base.rb:22:in `<top (required)>'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `block in require'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `load_dependency'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-4.0.0/lib/active_record/railtie.rb:66:in `block in <class:Railtie>'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/railtie.rb:188:in `call'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/railtie.rb:188:in `block in run_console_blocks'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/railtie.rb:188:in `each'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/railtie.rb:188:in `run_console_blocks'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/application.rb:264:in `block in run_console_blocks'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/engine/railties.rb:17:in `each'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/engine/railties.rb:17:in `each'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/application.rb:264:in `run_console_blocks'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/engine.rb:431:in `load_console'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/commands/console.rb:51:in `initialize'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/commands/console.rb:9:in `new'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/commands/console.rb:9:in `start'
from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-4.0.0/lib/rails/commands.rb:64:in `<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'

etech, have you thought about installing a virtual machine in your Windows? VMware, Parallels or Virtualbox?

Then install an Ubuntu VM, and install Ruby/Rails/rvm/etc... inside Ubuntu. I think you'll have less weird problems like this.

Personally I use OSX, but have installed an Ubuntu VM just to familiarize myself with it, and it's been pretty easy getting a RoR development environment running in Ubuntu (even easier than setting up RoR on my Mac).

etech, have you thought about installing a virtual machine in your Windows? VMware, Parallels or Virtualbox?

Then install an Ubuntu VM, and install Ruby/Rails/rvm/etc... inside Ubuntu. I think you'll have less weird problems like this.

Personally I use OSX, but have installed an Ubuntu VM just to familiarize myself with it, and it's been pretty easy getting a RoR development environment running in Ubuntu (even easier than setting up RoR on my Mac).

That's great advice. Nowadays I'd recommend Linux Mint rather than Ubuntu. You could alternatively set up a dual boot rather than VM but Virtualbox is a great way to go if you want a VM

I would switch to a Unix based system. I was originally running Rails in windows, and it was not very fun. Everything is slightly different. I recommend running Ubuntu in a virtual machine like VirtualBox. It will take a little work to set it up, but will save you days of headaches down the road. Promise.

I set up Ubuntu in VirtualBox, and am working on configuring it. It's been crashing here and there, though. I'm thinking of maybe setting up a Raspberry Pi - do you know if Rails can work on it? I've been looking for an excuse to buy one of those for a while.